It can be a) 12Hz.................
        
             
        
        
        
I took this test and the correct answer is c 
I hope this helps
        
                    
             
        
        
        
The impulse experienced by the object is 3 N s.
<u>Explanation:</u>
Impulse is also termed as change in the momentum of the object. So, it is directly proportional to the force acting on the object and the time for which the force is acting on that object.
Thus, impulse experienced by an object is the product of force acting on the object for a given time period. So, it is the sudden influence of force on the given volume.
As the force is given as 30 N and the duration or the time is given as 0.1 seconds. Then, the impulse will be product of force with duration.
Impulse = Force × ΔTime = Force × Duration
Impulse = 30 × 0.1 = 3 N s.
Thus, the impulse experienced by the object is 3 N s.
 
        
             
        
        
        
The crate would slide forward
        
                    
             
        
        
        
The number of cans that would be considered lethal if 10g was lethal and there where 12oz in a can is 419 cans.
<h3>How to convert mass?</h3>
According to this question, caffeine concentration is 1.99 mg/oz. 
1.99 milligrams can be converted to grams as follows:
1.99milligrams ÷ 1000 = 0.00199grams 
This means that 0.00199grams per oz is the caffeine concentration. 
If there were 12 oz in a can, then, 0.00199grams × 12 = 0.02388 grams in 1 can. 
This means that if 10grams is considered lethal, 10grams ÷ 0.02388 grams = 419 cans would be lethal for consumption. 
Therefore, the number of cans that would be considered lethal if 10g was lethal and there where 12oz in a can is 419 cans.
Learn more about conversion factor at: brainly.com/question/14479308
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